{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["DNA", "cell line", "protein", "cell type"], "input": "TCF-1 consists of two polypeptides of about 50 kD and 105 kD ; the former seems to be related to the 50 kD polypeptide of NF-kB ."}
{"DNA": [], "cell line": [], "protein": ["TCF-1", "50 kD polypeptide", "NF-kB"], "cell type": []}